In what type of pressure containment does hazardous drug preparation need to be conducted?

Hazardous drug preparation needs to be conducted in a negative pressure containment system. This type of pressure is crucial to ensure that any airborne contaminants, including hazardous drugs, do not escape into the surrounding environment. Negative pressure environments are designed to protect pharmacy personnel and the patient population from potentially harmful exposure, as they facilitate the containment of harmful particulates and vapors within the designated compounding area.

In a negative pressure room, the airflow is directed inward towards the compounding area, which prevents any hazardous substances from leaking out. This is especially important for substances that can pose risks through inhalation or skin contact. The design of such rooms helps ensure that any accidental release of these substances is confined, thus maintaining a safe working environment.

Other types of pressure containment, such as positive pressure, are used for sterile preparations that do not involve hazardous drugs, as the positive airflow can help prevent contamination from external sources. However, that does not apply in the case of hazardous drugs, where the need for containment and protection from exposure takes precedence.